... It only means that there is no lossy codec which is transparent on every samples, that simply doesn't exist, no matter the bitrate. ...
I searched back on the forum & on various samples databases for the worst problem samples I could found for vorbis & I edited with audacity the ones that I was able to ABX, usually from 10-30 sec to 1-2 sec, I even duplicated the channel from mono to stereo if it happens that the problem was only on the right or left channel.
I specially plan to test:1: Official Vorbis (all range) & Aotuv Q102: Lossy|Flac at --portable & a setting lower near 256Kbps (maybe --zero), but not higher (Add Ginnungagap sample)3: Lame MP3 (not a priority, but usefull as a reference)
Edit2: If ever a moderator read this plz edit the tittlefrom Listening Test: aoTuV Beta5.7 on 5 Killer Samples, 96-128-192-256Kbps (17 ABX Log+Files)to Multi-Codec Listening Test: 96-128-192-256Kbps, Killer Samples targetting vorbis (with logs)
... actually I don't plan to test Itunes for the simple reason that I don't want to install it. Even if it would be good, I want a CLI encoder so Itunes is useless for my personnal needs.
well in all honesty I don't plan to test itunes anytime soon even if I had the pre-encoded samples wink.gif I will never use this codec for my personnal use.
Yes, it is the same sample but edited (shortened & channel with the artefact duplicated to make it stereo) to focus on the specific artefact that I could heard.You are right the bitrate is low, but it's not a problem with my sample, it is an Itunes bug. With a low bitrate too (72Kbps) Musepack achieve transparency on the same sample.You can download all the samples (both lossy & lossless), everything is in the archives.